Drain valve



A 6 19g 1,591,859 .9 M. A. DRAIN VALVE Filed Sept. 26, 1925 -z6 27 5 i925 Z7 WITNESSES INVENTOR ATTORNEYS Patented July 6, 1926.

UNITED ST TES 1,591,859 PATENT OFFICE.

MARTIN ALOYSIUS MoCUE, or LONG BRANCH, NEW JERSEY.

DRAIN Application filed September This invention relates to drain valves.

Some of the objects of the present inven tron are: To produce a drain valve characterized by structural features by virtue of.

which the drain valve may be applied for use in a manner which renders the same invulnerable; to combine with a screw-threaded plug, a valve means for controlling a passage extended through the plug which 1 maybe employed in the drain opening of a crank case or the like for carrying out draining operations with exterior parts being protected against being damaged as a result of encountering certain obstructions; and to produce a device of the character mentioned which is comparatively inexpensive to manufacture and which is efficient in construction and effectual in operation.

The nature of the invention and its distinguishing features and advantages will appear when the following specification is read in conjunction with the accompanying drawing in which Figure 1 is a sectional view of a portion of a crank case with the drain valve of the present invention employed in the drain opening at the bottom of said crank case.

Fig. 2 is a side elevation of the drain valve detached with the valve lever shown in section. the section being taken on the line 2-2 of Fig. 3.

Fig. 3 is a central vertical sectional view through the drain valve with the valve member and its lever shown in elevation.

Referring now more particularly to the several views of the drawin it will be apparent that there is conventionally shown a crank case 10, the bottom section of which is provided with screw-threaded drain valve 12 of the present invention. The said drain valve includes an element 13 in the nature of a plug having a screw-threaded portion 14 and a portion 15. The portion 14: is capable of being threaded into the opening 11, and this is accomplished by the use of a suitable tool applied to the portion 15 which is in the nature of a nut in that the same is provided with flats 16. The element 13 has a passage 17 extending therethrough, and the said passage is controlled by a valve means presently to be described. The said valve means includes a beveled seat 18 at the lower end of the passage 17. A valve member 19 is employed which is arranged for movement into and out of conopening 11 in which is employed the drain,

VALVE.

26, 1925. Serial No. 58,857.

tact with the seat 18. The said valve mem-' her is of frustro-conical shape to conform to the shape of the seat 18 and thus closely fit the same. The valve member 19 is provided with a stem 20 which extends through a spider 21 and has sliding movement with respect thereto as well as turning movement. The upper end of the stem 20 is screwthreaded as at 22 to accommodate a nut 23. A spiral spring 24 surrounds a portion of the stem 20 and one end of the spring 24 is in contact with the nut 23 and the opposite end of said spring is in contact with the central bearing portion or spider 21, as shown most clearly in Fig. 3. The portion 15 of the element 13 is provided with a cam face 25 which may be inclined to any suitable degree transecting a horizontal plane and will be in the form of an arc of a circle. A lever 26 is employed by having one end thereof attached as at 27 to the valve member 19 with its opposite end extending beyond the portion 15 with a hole 28 in the free extremity thereof. It is to be noted that a portion of the lever 26 is in contact with the cam face 25 and this is true because of the action of the spring 24 which is of the extensible type. The spring 24 not only maintains a portion of the lever 26 in contact with the cam face 25 but also yieldingly maintains the valve member 19 in contact with the seat 18 to normally close the passage 17. It is further to be noted that the spring 24 will also permit of turning movement of the stem 20 and its valve member 19. It follows, therefore, that by imparting a turning movement to the lever 26 by the use of a hook, rod, or the like, which hook may be engaged in the hole 28, a portion of the lever will be cammed downwardly and as a result the .valve member will be moved downwardly off or out of contact with the seat 18 to permit any portion of the liquid, such as oil, in the lower section of the crank case to drain out through the passage 17. By moving the lever 26 in an opposite direction from that just mentioned the valve member 19 may be returned in con tact with the seat 18 to close the passage 17 as will be understood.

From the foregoing it will be apparent that the drain valve of the present invention is of comparatively simple construction; that by making use of an element such as the element 13 described the valve in its entirety may be so employed as to be invulnerable against flying, objects or from being damaged by encountering obstructions, for example, when the crank case to which the drain valve is applied forms a part of an automobile engine, since-there will not be any parts which jut downwardly; and that the portion 15, aside from serving for applying the element 13 in a drain opening, serves for protecting parts of the valve means.

What I claim is A drain valve comprising an element in the nature of a screw plug, said element having apassage extending therethrongh, a seat embodied by said element at the lower end of said passage, a valve member supl5 ported for movement into and out of engagement with said seat to control said passage, a cam face embodied by said element, a lever connected to the valve member, a portion of said lever adapted to traverse said cam face, and means for movably n'iaintaining said portion of said lever in contact with said cam face, said portion of said lever traversing said cam i'acein the movement of said lever to move the valve member into and out of engagement with said seat to control said passage.

MARTIN ALOYSIUS McOUE. 

